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Finding the Fourth Proportional to 749.15, 1,118.00 and 667.14

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Solution

The fourth proportional to 749.15, 1,118.00 and 667.14 is: 995.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.15 : 1,118.00 = 667.14 : x
  2. Step 2: Convert to fraction form
    749.15/1,118.00 = 667.14/x
  3. Step 3: Cross multiply
    749.15x = 1,118.00 × 667.14
  4. Step 4: Simplify right side
    749.15x = 745,860.00
  5. Step 5: Solve for x
    x = 745,860.00/749.15
  6. Step 6: Final answer
    x = 995.61

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.